abstraction

A chemical reaction or transformation, the main feature of which is the bimolecular removal of an atom (neutral or charged) from a molecular entity. For example:
A00045-1
(proton abstraction from acetone)
A00045-2
(hydrogen abstraction from methane)
See: detachment
Source:
PAC, 1994, 66, 1077 (Glossary of terms used in physical organic chemistry (IUPAC Recommendations 1994)) on page 1081